Cutter-lid closure for circular cans having hermetically-sealed taggers-tin tops.



1.]. HOURIGAN, DECD.

A. 12. WATT, ADMINISTRATOR.

CUTTER LID CLOSURE FOR CIRCULAR CANS HAVING HERMETICALLY SEALED TAGGERSTIN TOPS. APPLICATION FILED MAY 27, 1914.

1,149,055; Patented Aug. 3, 1915.

COLUMnlA PLANOGRAPH 60.,WASH1NOTON, D. c.

JOHN JOSEPH HOUIR-IGAN, DECEASED, BY WATT, ADMINISTRATOR, F

RANDWIGK; NEAR SYDNEY, NEW SOUTH WALES, AUSTRALIA.

CUTTER-LID CLOSURE FOR CIRCULAR CANS HAYIN I-IERMETIOALLY-SEALEDTAGGERS- TIN TOPS.

Specification. of Letters Patent.

Patented Aug. 3, leis.

To all whom it may concern:

Be it known that I, ALEXANDER Gnonon WATT, a subject of the King ofGreat Britain and Ireland, residing at Avoca street, Randwick, nearSydney, in theState of New South Wales, Commonwealth of Australia, andadministrator of the estate of JOHN J OSEPI-I HOURIGAN, deceased, theinventor of certain new and useful Improvements in Cutter-Lid Closuresfor Circular Cans Having Hermetically-Sealed Taggers-Tin Tops, do herebydeclare the following to be a specification of the said invention.

This invention relates toimprovements in cutter lid closures forcircular cans] having hermetically sealed taggers tin tops and it isdirected to the provision of a slip-on rotatable lid having anintegrally formed cutting nib or ripper of effective and improvedconstruction.

Hitherto there have been attached independently formed cutting nibs orrippers to the lids of cans secured in such a way that they slideradially in slotsor guides formed near the edges of the llds. Thesliding movement is necessary to permit the depend- 7 ing cutting nibbeing moved outwardly so as to normally lie between the dependingportion of the lid and the top of the can.. To open the can in suchconstruction, the lid is removed and the cutting nib or ripper thenforced inwardly to such a position that it will pierce the top of thecan when the 11d is forced thereon, when the said top may be removed bygiving the lid a complete rotation. The disadvantages incident to theabove-mentioned construction are the comparatively great cost ofmanufacture and the necessity of having the lids made much larger thanthe cans to accommodate the cutting nib when resting in its normal or1noperative position.

In order that the invention may be readily understood reference will nowbe made to the accompanying sheet of explanatory drawings wherein: V

Figure 1 is a view in plan of part of a slip-on lid having an integrallyformed cutting nib constructed according to the present invention. Fig.2 is a view in sectional side elevation of Fig. 1 taken on thedottedline 1-1. Figs. 3 and 1 are views in transverse section of part of thelid, showing the 7 cutting cutting nib in its inoperative and operativepositlons, respectively. Fig. 5 is an inverted plan view of Fig. 4.Figs. 6 and 7 are views in plan of part of a lid showing modifications1n the shape of the cutting nib.

' In these drawings wherein like characters of reference indicate thesame or correspondmg parts in the different views, a designates the 11d,in the top and near the edge of which is forced a V-sliaped slit I)having the apex pointing to the center thereof. The dies or swagesemployed to form the slit 5 also press up the metal around the same asshown at c and give tothe pointed nib (Z thus formed a concavedformation transversely to insure' it having a required degree ofstiffness or cutting strength to resist all bending or twisting strainswhen in opera- 131011. The dies that emboss the nib (Z to give it itsconcave formation also form a step e at its base which'is adapted toabut against a bulb or heel and the adjacent edge of the said lid.

. lid a provided with an integrally formed nib or ripper cl as abovedescribed can fit snugly on a tin and no provision is required for thedisposal of the said nib.

Thecutting nib may be given the shape shown in Figs. 6 and 7 of thedrawings-or it can be given any other formation preferred or found mostsuitable for a particular requirement.

To open the top 9 of a can-see dotted lines in Figs. 3 and 4the cuttingnib a? is brought into action by bending it downwardly as by-a fingernail or a penknife until it assumes a perpendicular position and isparallel with the rim of the lid. When the cutting nib is moved to thisposition and as shown in Fig. 4 of the drawings, the stepped portion eat its base bears upon the bulb or heel f which prevents it going beyondthe perpendicular and insures its perfect rigidity when in action. Afterdepressing the cutting nib (Z the same can be forced through the taggertin top 9 and the lid a rotated to remove the same in the ordinary way.

The concave formation of the cutting nib d besides preventing itbecoming distorted in action also causes the ragged edge of the taggertin to be turned over neatly after the I I f formed on the inside ofthelid aand between the base of the nib" thin sheet metal, and the outercurved face in operation has a rubbing bearing against the inner face ofthe rim and insures an even and clean out being made, through the taggertop as near as possible to the edge thereof.

What I do claim is 1. A can lid comprising in combination, an integrallyformed piercing and cutting nib integral with the can lid and adapted tobe bent downwardly out of its normal plane into operative position, saidcutting nib being provided with a stepped portion and an inwardlyprojecting bulb, the said stepped portion being adapted to bear againstsaid inwardly projecting bulb when the nib is bent downwardly inoperativeposition.

2. A can lid having a rim and an inte grallyformed piercing and cuttingnib of V-shaped formation with the apex pointing toward the center ofthe lid and formed with a stepped portion at its base, and an inwardlyprojecting bulb the stepped part of the nib being adapted to bearthereupon when the same is pressed downwardly to lie parallel with therim of the lid, substantially as described.

8. A lid for cans having an integrally formed cutting nib, a steppedportion at the base of said nib, and an inwardly projecting bulb locatedbetween the base of the nib and the adjacent side portion of the lid,

and an embossment on that part of the lid from which the cutting nib isconstructed and surrounding said cutting nib in its inoperativeposition, substantially as described.

4. A can lid having arim and comprising in combination a piercing andcutting nib integral withthe can lid, said nib being curved transverselyand formed with a step at its base, an inwardly projecting bulb locatedbetween the base of the nib and the adjacent side of the lid, thestepped portion of the nib being adapted to lie adjacent to and parallelwith the bulb when the nib is pressed downwardly, in an operativeposition. I I

In witness whereof I have signed this specification in the presence oftwo wit-v Gopies of this ipatent may be obtained for fivc'cents'each, byaddressing the Commissioner of Patents, Washington, D. 0.

nesses. A. G. WATT,

Administrator of the estate of John Joseph H oum'gzm. T Witnesses:

A. J. CALLINAN, M. KENNEDY.

